Son of Robert Fitzgerald and Lucinda Jackson of Kilkee, county Clare, Ireland (then part of the United Kingdom of Great Britain and Ireland), Fitzgerald joined the Royal Navy in March 1809, passed his examination in 1815, and was commissioned in March 1826.[1] While in the naval service Fitzgerald was assigned to the Royal Navy's West Africa Squadron which was tasked with interdicting the Atlantic slave trade, where he served with distinction.[1]
Either during this time or possibly before, Fitzgerald became a staunch abolitionist and fierce opponent of slavery. In 1839 he seized two Spanish slave ships falsely flying the American flag. For legal reasons he escorted the ships to New York where the courts ruled them to be unlawful and Fitzgerald was allowed to take the freed slaves back to Sierra Leone. Severe weather resulted in a number of deaths during the return voyage.[2] Subsequently Fitzgerald became involved in the notorious Amistad incident which was dramatized in the 1997 film Amistad; Fitzgerald was portrayed by actor Peter Firth. In 1840 he was sent home, promoted to the rank of commander and placed on half pay for medical reasons.[1][2]
In 1844 Fitzgerald was appointed as the colonial governor of British Gambia. His three-year tenure as governor was largely unremarkable although he gained a reputation for being sympathetic to the native population and was seen as something of a reformist.[2]
Fitzgerald's administration of Western Australia saw numerous public works projects and an active campaign to encourage immigration by both voluntary colonists and convicts. This resulted in a dramatic improvement in infrastructure as well as an increase in population from roughly 5,000 to 12,000 at the end of his governorship.[1][2] Soon after his arrival in Western Australia in 1848, Fitzgerald accompanied Augustus Gregory on an expedition in the Northampton region where Gregory and his brother had discovered lead the year before. An encounter with Aboriginal people resulted in Fitzgerald being speared in the leg and at least three Aborigines shot dead.[3]
Following his return to England, his tenure as governor was reviewed with satisfaction and he was made a Companion of the Order of the Bath in 1857. After which Fitzgerald retired to his home in Kilkee Ireland where he died on December 29, 1887 at 96, an unusually advanced age for the time.[1]